1.threaten to 威胁

Every few years we threaten to leave.
每隔几年我们总威胁要放弃。

2.prove to 证明

But I would like to prove to them that I can do something for this area —at least, for the women.
但是我希望能证明给他们看，我可以为这个地区做些什么——至少给女人们。

All this is needed so they can prove to the new administration that they are viable in the long-term.
对它们来说，所有这些都是必要的，这样可以向新政府证明它们长期存在的可行性。

3.want to 想要做；想要…

I want to insure my house.
我要为自己的住宅保险。

We want to be quite clear on this point.
关于这一点，我们要完全弄清。

4.admit to 承认；许可进入

More importantly I have to explain to them why we think this, and to admit to them that we don't yet fully understand how or why this happened.
更重要的是我给他们解释为什么我们这样认为，对他们承认我们还不能全面地了解怎样或为什么发生了这个。

More importantly I have to explain to them why we think this, and to admit to them that we don't yet fully understand how or why this happened.
更为重要的，我必须向他们解释为什么我们会如此认为，并承认我们至今仍然没有完全弄明白这场爆炸是如何发生的，为什么会发生。